Method of displacing liquids through pipes

Details Method of displacing liquids through pipes Method of displacing liquids through pipes

1994-06-09

1996-01-16

Chambers, A. Michael

Fluid handling

Processes

1372511, 137807, 507200, F16K 1310, E21B 3316

Patent

active

054839866

ABSTRACT:
Improved methods of displacing a first liquid through a pipe with a second liquid while preventing the first and second liquids from mixing are provided. In accordance with the methods, a plug is formed in-situ in the pipe between the first and second liquids by injecting a self-thickening liquid therein and permitting the liquid to thicken. The formed plug and the first liquid are then displaced through the pipe with the second liquid. The methods are particularly suitable for carrying out subterranean well bore cementing operations wherein cement slurries are displaced through pipes disposed in well bores.

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